Door-spring.



No. 826,730. PATENTED JULY 24', 1906.

J. C.- MAY; DOOR SPRING.

7 APPLICATION FILED 0012 26, 1904.

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, UNITED STATES PATENT OFFiOE.

Specification of Letters Patent.

Patented. July 24, 1906.

Application filed October 26, 1904. Serial No. 230.114.

10 all whom it may concern:

Be it known that I, JOHN 0. MAY, a citizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in Door-Springs; and I do hereby declare that the following is 'a'full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

This invention. pertains to improvements in springs for use in opening doors.

The object of the invention is to provide a spring that will be equally adapted for use in opening both light and heavy weight doors.

A further object of the present invention is to provide a spring that may be adjusted to exert greater or less pull on the door on which it is used.

A still further object of the invention is to improve generally on a door-spring by simplifying construction and reducing the cost of production.

A further object is to provide a convertible 'spring device for doors that can be readily changed to operate doorseither for opening or closing purposes. I I

In the appended drawings, Figure 1 is a view of my spring attached to a door and door-jamb. Fig. 2 is a top view of the same, showing part thereof in cross-section. Fig. 3 is a cross-section of a member, showing means of holding the end of a sprin therein. Fig. 4 is a cross-sectional view 0 an arm which receives the pressure of the spring, showing a cross-head thereon for holding said spring. Fig. 5 is a top view of one end of the arm shown in Fig. 4, showing manner of constructing it. I

A indicates the door post or jamb, and B the door for attachment thereto by means of hinges, which, however, are not shown. Se-

cured to the said door-post at a convenient distance are two brackets C D, the former having an aperture E therethrough and the latter having merely a socket F. These said brackets are located one above another, as shown, and an adjusting-rod G is carried thereby, said rod being of large diameter except at its extremities, where it is reduced in size to enter the hole in one of the brackets and-the socket in the other. The upper end of the rod is rounded to enter the round aperture in the bracket C, and the extremity is made square toreceive a wrench for tightening purposes, as willbe hereinafter explained. At its middle the rod G is reduced in size and receives one end of a rod H, which lies at right angles thereto. Said rod is preferably made in two portions where it engages the rod G, as shown in Fig. 5, being in the form of a clip,one half (indicated by I) being securedito the other half by means of a screw J. Thus constructed and attached the rod or arm H is free to swing upon the rod G. By reducing the rod G at its middle the rod H is prevented from shifting along it, but at the same time is allowed to turn on said rod. Two springs K are now provided, one end of each of which is held in the rod G by inserting said ends in sockets made in said rod G, as shown at L in Fig. 1. Secured to the rod H are two members M, having the extensions N, Fig. 4. These members are held on the rod by means of screws 0, and the extremities N are bored to receive the free ends of the springs K, as shown.

At P is an eye secured to the door, through which the rod H extends and by which the door is operated through the medium of the springs.

At Q in the upper bracket 0, before described, is a pin, which passes through the said bracket and the upper end of the rod G, this serving to hold the rod wherever stationed after the springs are tightened. The

mode of accomplishing the tightening of the s ring is to place a wrench upon the up or sguared portion of the rod G, then ai ter withdrawing the pin Q to turn said rod G in a direction to put greater tension on the springs, afterward re lacing the pin.

As illustrated in t e drawings, my device is applicable for use on the doors of hosehouses for the purpose of opening said doors in case of fire. In this case the springs are reversed from the position necessary for the closing movement. My-device is therefore adaptable for both opening and closing doors. The rod H is made of some considerable length, so that the tension of the springs is communicated to its free end through the member P to the door. Greater or less leverage may be had by adjusting the said member P toward or away from the spring, as will be understood. Also by adjusting the members M M to various positions along the rod H, as indicated in broken lines, greater or less pull may be had from the spring, so that both heavy and light doors can be readily operated.

If it is desired to use the device for screened or other doors that are to be kept shut by such a device, the springsare removedfrom the rod G, the up .er one being inverted and placed upon the oWer end of the saidcrod for both opening andclosing-doo-rs, a verti: 1- calirodsecured-Ito the.:doorepost,iand-adjustre able ,axially thereon, a horizontal 110d loosely: att-achedthereto: andradapted to turn there? on, a s-pringparried .on-each extremity of the vertical rodvthe adjsaoentiextremitiies of the r two springs adapteduto :swingythe door,;.a, i

member on the door Within which the horizontal rod shifts, adjustable shifting members on thehorizontal rod and shiftable also on saidsprings for the purposes described, the opposite remote ends of the springs being removably held in the said vertical rod, said,

springs both adapted to be inverted and also to ;exchange-places with one another for changing the direction of their pressure for adapting them to doors to be opened or doors that areto be" closed-by themm in presence. of {DWOvWitIwSSes JOHNLG. I Witnesses z;

In testimonywhereof Laflixm'y; signature 1- 

